Emmision Control Techniches PPT

1. SAVITRIBAI PHULE PUNE UNIVESITY
DR Vitthalrao vikhe patil
College Of Engineering, Ahmednagar
Department of Mechanical Engineering
A Presentation On :-
Emission Controls Techniques
Prepared By :-
Santosh Machhindra Desai

2.  Introduction
• Vehicle emissions is the emissions produced
by motor vehicles.
• Air pollution comes from both natural and man
made sources. Though globally man made
pollutants from combustion, construction,
mining, agriculture and warfare are
increasingly significant in the air pollution
equation.
• Motor vehicle emissions are one of the leading
causes of air pollution.
• Emissions of many air pollutants have been
shown to have variety of negative effects on
public health and the natural environment.

3. Emissions causing pollution & health hazards
Hydrocarbons :-
A class of burned or partially burned fuel, hydrocarbons are toxins.
Hydrocarbons are a major contributor to smog, which can be a major problem in urban
areas.
Prolonged exposure to hydrocarbons contributes to asthma liver disease, lung disease,
and cancer.
Carbon monoxide (CO)
A product of incomplete combustion, carbon monoxide reduces the blood's ability to
carry oxygen, overexposure (carbon monoxide poisoning may be fatal Carbon Monoxide
poisoning is a major killer.
Nitrogen oxides (NO):-
Generated when nitrogen in the air reacts with oxygen at the high temperature and
pressure inside the engine. NO, is a precursor to smog and acid rain. NO, is a mixture of
NO, N₂O, and NO₂.

4. NO, is extremely reactive. It destroys resistance to respiratory infection. NO, production is
increased when an engine runs at its most efficient (i.e. hottest) part of the cycle.
Particulate matter:-
Soot or smoke made up of particles in the micrometer size range: Particulate matter causes
negative health effects, including but not limited to respiratory disease and cancer.
Sulfur oxide (SO):-
A general term for oxides of sulfur, which are emitted from motor vehicles burning fuel
containing sulfur. Reducing the level of fuel sulfur reduces the level of Sulfur oxide emitted
from the tailpipe.
Volatile organic compounds (VOCs):-
Organic compounds which typically have a boiling point less than or equal to 250 °C; for
example chlorofluorocarbons (CFCs) and formaldehyde. Volatile organic compounds are a
subsection of Hydrocarbons that are mentioned separately because of their dangers to
public health.

10. Thank you !